A5059130811- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Microbial Community Ecology and Physiology
- Oceanographic and Atmospheric Processes
- Cephalopods and Marine Biology
- Marine and fisheries research
- Isotope Analysis in Ecology
- Marine Bivalve and Aquaculture Studies
- Hydrocarbon exploration and reservoir analysis
- Environmental Toxicology and Ecotoxicology
- Neurobiology and Insect Physiology Research
- Geology and Paleoclimatology Research
- Physiological and biochemical adaptations
Duke University
2021-2024
University of California, Berkeley
2016-2019
The goal of the EXport Processes in Ocean from RemoTe Sensing (EXPORTS) field campaign is to develop a predictive understanding export, fate, and carbon cycle impacts global ocean net primary production. To accomplish this goal, observations export flux pathways, plankton community composition, food web processes, optical, physical, biogeochemical (BGC) properties are needed over range ecosystem states. Here we introduce first EXPORTS deployment Station Papa Northeast Pacific during summer...
The NASA EXport Processes in the Ocean from RemoTe Sensing (EXPORTS) program was established to better quantify pathways of biological carbon pump order gain a more comprehensive understanding global export efficiency. summer 2018 field campaign vicinity Station Papa (Station P; 50°N, 145°W) Northeast Pacific yielded evidence low phytoplankton biomass and primary productivity dominated by small cells (<5 µm) that are reliant on recycled nutrients. Using combined 13C/15N stable isotope...
Abstract The second field campaign of the NASA EXport Processes in Ocean from RemoTe Sensing (EXPORTS) program was conducted late spring 2021 within vicinity Porcupine Abyssal Plain (49.0°N, 16.5°W) North Atlantic Ocean. Observations EXPORTS support previous characterizations this system as highly productive and organic matter rich, with majority primary production occurring large cells (≥ 5 µm) such diatoms that are primarily utilizing nitrate. Rates total euphotic zone depth-integrated net...
Abstract The North Atlantic is a region of enhanced biogeochemical and climatological importance for the global ocean as it site one largest seasonal phytoplankton blooms on planet. However, there lack understanding how size influences bloom dynamics associated nutrient utilization rates, particularly during decline phase when export to deep especially pronounced. Here, we evaluate trends in size‐fractionated carbon, nitrogen, silicic acid uptake rates conjunction with environmental...
Microbial respiration is a critical component of the marine carbon cycle, determining proportion fixed that subject to remineralization as opposed being available for export ocean depths. Despite its importance, methodological constraints have led an inadequate understanding this process, especially in low-activity oligotrophic and mesopelagic regions. Here, we quantify rates low 0.2 µ mol O 2 L -1 d contrasting productivity provinces using oxygen optode sensors identify size-fractionated...
Abstract Ocean physics and biology can interact in myriad complex ways. Eddies, features found at many scales the ocean, drive substantial changes physical biogeochemical fields with major implications for marine ecosystems. Mesoscale eddies are challenging to model difficult observe synoptically sea due their fine-scale variability yet broad extent. In this work we observed a frontal eddy just north of Cape Hatteras via an intensive hydrographic, biogeochemical, optical sampling campaign....
Mesoscale oceanographic features, including eddies, have the potential to alter productivity and other biogeochemical rates in ocean. Here, we examine microbiome of a cyclonic, Gulf Stream frontal eddy, with distinct origin environmental parameters compared surrounding waters, order better understand processes dominating microbial community assembly dynamic coastal Our microbiome-based approach identified eddy as from surround waters. The eddy-associated occupied larger area than by...
New production (NP) and net community (NCP) measurements are often used as estimates of carbon export potential from the mixed layer ocean, an important process in regulation global climate. Diverse methods can be to measure NP NCP, research vessels, autonomous platforms, remote sensing, each with its own set benefits uncertainties. The various rarely applied simultaneously a single location, limiting our ability for direct comparisons resulting measurements. In this study, we evaluated NCP...
ABSTRACT Microbial respiration plays a pivotal role in the marine carbon cycle, influencing fraction of fixed that undergoes remineralization versus export to depth. Despite its importance, methodological constraints have led an inadequate understanding this process, especially low-activity oligotrophic and mesopelagic regions. Here, we quantify rates as low 0.2 µ mol O2 L -1 d contrasting ocean productivity provinces using optical oxygen sensors identify size-fractionated trends. At North...
Members of the marine bivalve family Limidae are known for their bright appearance. In this study, colourful tissues were examined as a defence mechanism towards predators. We showed that when attacked by peacock mantis shrimp ( Odontodactylus scyllarus ), ‘disco’ clam, Ctenoides ales , opened wide to expose brightly coloured predator. The predator also significantly preferred consume internal, non-colourful clam than external, tissues. Mass spectrometry-based metabolomic analysis confirmed...
Abstract Mesoscale oceanographic features, including eddies, have the potential to alter productivity and other biogeochemical rates in ocean. Here, we examine microbiome of a cyclonic, Gulf Stream frontal eddy, with distinct origin environmental parameters compared surrounding waters, order better understand processes dominating microbial community assembly dynamic coastal Our microbiome-based approach identified eddy as from surround waters. The eddy-associated occupied larger area than by...
The ‘disco’ clam Ctenoides ales (Finlay, 1927) is an Indo-Pacific bivalve with unusual reflective flashing display. function of the unknown. a suspension-feeder, so experiments were conducted to test hypothesis that acts as lure for planktonic prey items are phototactic. First, reaction C. plankton stimulus was analyzed. Exposure concentrated mix followed by significant increase in flash rate (Hz) 5s, after which returned pre-stimulus levels. Next, two determine if potential (mixed...